CN103382125B - Diatomite ceramic filter core and preparation method thereof - Google Patents

Abstract

A diatomite ceramic filter core and a preparation method thereof are disclosed. The diatomite ceramic filter core is characterized by being prepared from the following raw materials, in parts by weight: 55-60 parts of a diatomite powder, 30-35 parts of an active carbon powder, 3-4 parts of sodium bicarbonate, 3-4 parts of sodium carbonate, 6-8 parts of carboxymethyl cellulose, 4-6 parts of polyvinyl pyrrolidone, 20-25 parts of modified bentonite, and a proper amount of water. Active carbon can better adsorb heavy metals and particulate matters, and the diatomite ceramic filter core is a reusable energy-saving environmental-protection type filter core. The diatomite ceramic filter core has the outstanding advantages of high purification efficiency, high temperature resistance, low pressure loss, corrosion resistance, long service life and the like, and can also remove micro-dust in air.

Description

A kind of diatomite ceramic element and preparation method thereof

Technical field

The invention belongs to filtering material technical field, specifically a kind of diatomite ceramic element and preparation method thereof.

Background technology

Filtering material purposes is very extensive, is widely used in the industry such as chemical industry, electric power, metallurgy, oil, electronic apparatus, machinery; Modal have an air filter for automobile, for filtering the air that enters engine, the mechanical impurity compositions such as airborne particulate matter, particulate stopped, prevents that these compositions from entering in gasoline, diesel oil or machine oil, guarantees engine work.Also has a large amount of filtering materials for air conditioning system, ambient atmosphere pollutes very serious now, greatly be detrimental to health, air filting material can be by the various deleterious particle thing absorption of air, prevent from entering people's life or Working environment, reduce the suction of human lung to objectionable impuritiess such as particulate matter, improve people's quality of life, reduce the generation of disease.Some is for water filtration and sewage disposal, for separating of the heavy metal in water or objectionable constituent.Existing filtering material mainly contains ceramic honey comb, filter paper, woven wire etc.Existing honeycomb ceramic filter material feedstock is joined function singleness, can not meet the requirement of technology development.

Summary of the invention

The object of this invention is to provide a kind of diatomite ceramic element and preparation method thereof.

The technical solution adopted in the present invention is:

A diatomite ceramic element, is characterized in that being made by the raw material of following weight part:

Diatomite in powder 55-60, activity charcoal powder 30-35, sodium bicarbonate 3-4, sodium carbonate 3-4, carboxymethyl cellulose 6-8, polyvinylpyrrolidone 4-6, modified alta-mud 20-25, water are appropriate.

Described modified alta-mud is made by following methods:

Wilkinite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into 10-12% hydrochloric acid soln and soak 2-3 hour, then put into 10-12% sodium hydroxide solution and soak 1-2 hour, take out, with pure water, clean, dry grinding powder; Add be again equivalent to the aluminium nitride of wilkinite weight 35-40%, the alum powder of the Dogbane Leaf of 16-18%, 2-3%, the tungsten carbide powder of the zeolite powder of 2-3%, 3-4%, mix and blend 30-40 minute, and then spray into and be equivalent to wilkinite weight 5-7%'s linking agent TAC, under 12000-15000 rev/min, stir 40-50 minute, obtain.

The preparation method of described diatomite ceramic element, is characterized in that comprising the following steps:

By after each mixing of materials, vacuum pugging, compression moulding, sends into sintering in sintering oven, the sintering 3-4 hour at 420-450 ℃ of elder generation, then, with 4-6 ℃/min of speed, be warming up to 1020-1050 ℃ of sintering 3-4 hour, cooling after, take out, send in the potassium permanganate solution of 350-420ppm and soak after 2-3 days, with clear water, clean, dry.

Gac of the present invention is Adsorption of Heavy Metals and particulate matter preferably, and diatomite ceramic element is a kind of reusable energy saving and environment friendly filter core.The present invention has that purification efficiency is high, high temperature resistant, the pressure-losses is little, corrosion-resistant, long service life, remove the outstanding advantages such as airborne micronic dust.The present invention can for the air filtration of air conditioning system, also can be for water filtration, can also, for the air-breathing filtration of automobile filter, be applicable to the severe place of various environment.

Embodiment

A diatomite ceramic element, by following weight part (kilogram) raw material make:

Diatomite in powder 60, activity charcoal powder 30, sodium bicarbonate 4, sodium carbonate 4, carboxymethyl cellulose 6, polyvinylpyrrolidone 4, modified alta-mud 25, water are appropriate.

Described modified alta-mud is made by following methods:

Wilkinite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into 10-12% hydrochloric acid soln and soak 2-3 hour, then put into 10-12% sodium hydroxide solution and soak 1-2 hour, take out, with pure water, clean, dry grinding powder; Add again and be equivalent to the aluminium nitride of wilkinite weight 40%, 18% Dogbane Leaf, 3% alum powder, 3% zeolite powder, 4% tungsten carbide powder, mix and blend 30-40 minute, and then spray into and be equivalent to wilkinite weight 7% linking agent TAC, under 12000-15000 rev/min, stir 40-50 minute, obtain.

The preparation method of diatomite ceramic element, comprises the following steps:

By after each mixing of materials, vacuum pugging, compression moulding, sends into sintering in sintering oven, the sintering 3-4 hour at 420-450 ℃ of elder generation, then, with 4-6 ℃/min of speed, be warming up to 1020-1050 ℃ of sintering 3-4 hour, cooling after, take out, send in the potassium permanganate solution of 350-420ppm and soak after 2-3 days, with clear water, clean, dry.

Sample main technical details of the present invention is: heat shock resistance: 950 ℃-20 ℃ air-cooled does not once split; 1250 ℃ of maximum operation (service) temperatures.The technical indicator of exhaust gas purification and treatment device is: process 550 ℃ of gas top temperatures; Trapping micronic dust efficiency >=99%; Outlet discharge soot dust granule substrate concentration≤30mg/m3; The dust granules minimum grain size scope 1-10 μ m catching.

Claims (1)

1. a diatomite ceramic element, is characterized in that being made by the raw material of following weight part:

Diatomite in powder 55-60, activity charcoal powder 30-35, sodium bicarbonate 3-4, sodium carbonate 3-4, carboxymethyl cellulose 6-8, polyvinylpyrrolidone 4-6, modified alta-mud 20-25, water are appropriate;

Described modified alta-mud is made by following methods:

Wilkinite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into 10-12% hydrochloric acid soln and soak 2-3 hour, then put into 10-12% sodium hydroxide solution and soak 1-2 hour, take out, with pure water, clean, dry grinding powder; Add be again equivalent to the aluminium nitride of wilkinite weight 35-40%, the alum powder of the Dogbane Leaf of 16-18%, 2-3%, the tungsten carbide powder of the zeolite powder of 2-3%, 3-4%, mix and blend 30-40 minute, and then spray into the linking agent TAC that is equivalent to wilkinite weight 5-7%, under 12000-15000 rev/min, stir 40-50 minute, obtain;

The preparation method of described diatomite ceramic element, comprises the following steps:

By after each mixing of materials, vacuum pugging, compression moulding, sends into sintering in sintering oven, the sintering 3-4 hour at 420-450 ℃ of elder generation, then, with 4-6 ℃/min of speed, be warming up to 1020-1050 ℃ of sintering 3-4 hour, cooling after, take out, send in the potassium permanganate solution of 350-420ppm and soak after 2-3 days, with clear water, clean, dry.